鼓膜成形术听力疗效及相关因素分析

目的:探讨鼓膜成形术术后听力疗效,并对其相关影响因素进行分析.方法:1999年1月～2003年12月住院行颞肌筋膜夹层法鼓膜成形术,且术前纯音测听结果为传导性聋的患者共165例(175耳),随访2年以上,对可能影响疗效的10项因素进行多元线性回归分析.结果:纯音测听示术后气骨导差的平均值较术前降低7.1 dBHL.使用多元线性回归对可能影响术后听力的因素进行筛选,按其作用大小依次为:术前气导听阈平均值、干耳时间、病程、年龄.主观听力的改变与客观听力的改变具有相关性.结论:术前听力越好,年龄越小,在一定范围内(2年)干耳时间越久,病程越短,则术后气骨导差越小,听力提高的可能性越大.纯音测听听力改善者,大多数主观听力亦改善.

Hearing results and an analysis of related impact factors following myr-ingoplasty

Objective:To evaluate the hearing results and the effects of the prognostic factors following myringoplasty.Method:Retrospective cohort 165 inpatients(175ears) with preoperative conductive hearing loss were analyzed using multiple linear regression statistical analysis.They have undergone sandwich temporalis fascia myringoplasty between January 1999 and November 2003.Patients have been followed-up for more than 2 years.Result:The average air-bone gap improvement for all 175 myringoplasty procedures was 7.1 dBHL.Multiple linear regression statistical analysis was subsequently carried out on these prognostic factors on hearing outcomes and yielded the following relative importance of the predictive is as follows: mean preoperative air conduction threshold,duration of dry ear,duration of disease,age.There is a strong correlation between subjective audition and pure tone threshold audiometry.Conclusion:A relatively better preoperative hearing,a relatively longer duration of dry ear,a relatively shorter duration of disease and a relatively younger age were found to be significant prognostic factors influencing the postoperative air-bone gap improvement of myringoplasty.Subjective audition improvement coupled with objective pure tone threshold audiometric improvement.